Microwave high-pressure reaction kettle

Abstract

The embodiment of the invention discloses a microwave high-pressure reaction kettle. The microwave high-pressure reaction kettle comprises a kettle body, a kettle cover, a stirring device connected to the kettle cover, and amicrowave energy feedback device fixed on the kettle cover through a connecting flange; the microwave energy feedback device comprises a microwave generator and a microwave dielectric window connected with the outlet end of the microwave generator; the microwave medium window comprises a shell with a containing cavity, the shell comprises a cover body and a medium container fixedly connected with the cover body, and the containing cavity is formed between the cover body and the medium container; the microwave dielectric window further comprises a pressure-bearing medium fixed in the containing cavity; the cover body comprises a first through hole corresponding to the outlet end of the microwave generator; the medium container comprises a second through hole corresponding to the first through hole; a top port of the connecting flange is fixedly connected with the medium container; and a bottom port of the connecting flange extends to the inner side of the kettle cover. The reaction kettle provided by the invention is higher in pressure bearing capacity and better in temperature resistance and microwave matching performance.

Description

technical field [0001] The invention relates to the field of microwave technology. More specifically, it relates to a microwave high-pressure reactor. Background technique [0002] Microwave refers to electromagnetic waves with a frequency in the range of 300MHz to 300GHz. At present, scientific research and production have higher practical requirements for microwave reaction devices, especially for traditional microwave reaction devices in terms of high power, high pressure, and high temperature. Raise new challenges. [0003] The microwave high-temperature and high-pressure reaction device not only needs to consider the microwave excitation problem, but also needs to consider the pressure bearing problem in the high-pressure environment. Most microwave energy feeding devices in the prior art use rectangular mica sheets or rectangular polytetrafluoroethylene sheets to isolate water vapor. The spacer with this shape and material has a weak pressure bearing capacity, which ...

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Problems solved by technology

[0003] The microwave high-temperature and high-pressure reaction device not only needs to consider the microwave excitation problem, but also needs to consider the pressure bearing problem in the high-pressure environment. Most microwave energy feeding devices in the prior art use rectangular mica sheets or rectangular polytetrafluoroethylene sheets to isolate water vapor. The spacer with this shape and material has a weak pressure bearing capacity, which cannot guarantee the compressive performance of the microwave feeding part in a high-pressure environment, and it is easy to cause the breakage of the spacer, resulting in the leakage of gas inside the microwave equipment, and the diffused gas is easy to impact The microwave source (that is, the microwave generator) will cause the function of the microwave source to fail, damage the equipment, and pose a great safety risk

In addition, in the prior art, there is also a microwave energy feeding device that uses tempered glass as the material of the spacer, which can improve the pressure bearing capacity of the spacer, but there is also a large microwave loss, which causes the temperature of the spacer to rise and is easy to damage , but there are also disadvantages such as poor microwave matching performance

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